<template>
  <div class="div-container">
	  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container class="main-container">
      <!-- 侧边栏区域 -->
      <el-aside :width="isCollapse ? '64px':'200px'">
        <el-col :span="24">
          <el-menu
            class="el-menu-vertical-demo"
            background-color="#333744"
            text-color="#fff"
            active-text-color="#409EFF"
            unique-opened
            :collapse="isCollapse"
            :collapse-transition="false"
            :router="true"
            :default-active="activePath"
          >
            <div class="toggle-button" @click="toggleCollapse">|||</div>
            <!-- 一级菜单 -->
            <el-submenu :index="''+item.id" v-for="item in menulist" :key="item.id">
              <!-- 一级菜单的模板区域 -->
              <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[''+item.id]"></i>
                <!-- 文本 -->
                <span>{{item.authName}}</span>
              </template>
              <!-- 二级菜单 -->
              <el-menu-item
                :index="'/' + subItem.path"
                v-for="subItem in item.children"
                :key="subItem.id"
                @click="saveNavState('/'+ subItem.path)"
              >
                <template slot="title">
                  <i class="el-icon-menu"></i>
                  <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-col>
      </el-aside>
      <!-- 主体区域 -->
      <el-main :style="{'margin-left': isCollapse ? '64px':'200px'}">
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
  </div>
</template>

<script>
export default {
	data() {
		return {
			menulist: [],
			iconsObj: {
				125: 'iconfont icon-user',
				103: 'iconfont icon-tijikongjian',
				101: 'iconfont icon-shangpin',
				102: 'iconfont icon-danju',
				145: 'iconfont icon-baobiao',
			},
			isCollapse: false,
			// 被激活的连接地址
			activePath: '',
		}
	},
	created() {
		this.getMenuList()
		this.activePath = window.sessionStorage.getItem('activePath')
	},
	methods: {
		logout() {
			window.sessionStorage.clear()
			this.$router.push('/login')
		},
		// 获取所有的菜单
		async getMenuList() {
			const { data: res } = await this.$http.get('menus')
			if (res.meta.status !== 200) {
				return this.$message.error(res.meta.msg)
			}
			this.menulist = res.data
			// console.log(res);
			console.log(this.menulist)
		},
		// 点击按钮，。切换菜单的折叠与展开
		toggleCollapse() {
			this.isCollapse = !this.isCollapse
		},
		// 保存连接的激活状态
		saveNavState(activePath) {
			window.sessionStorage.setItem('activePath', activePath)
			this.activePath = activePath
		},
	},
}
</script>

<style  lang="less" scoped>
.div-container {
	display: block;
}
.home-container {
	height: 100%;
}
.main-container {
	position: flex;
	justify-content: left; 
}
.el-header {
	background-color: #373d41;
	display: flex;
	justify-content: space-between; // 元素对齐两边
	padding-left: 0;
	align-items: center; // 图片居中
	color: #fff;
	font-size: 20px;
	position: fixed;
	top: 0;
	right: 0;
	left: 0;
	z-index: 1000;
	> div {
		display: flex;
		align-items: center;
		span {
			margin-left: 15px;
		}
	}
}
.el-aside {
	background-color: #333744;
	position: fixed;
	top: 60px;
	left: 0;
	bottom: 0;
	z-index: 999;
	.el-menu {
		border-right: none;
	}
}
.el-main {
	background-color: #eaedf1;
	margin-top: 60px;
}
.iconfont {
	margin-right: 10px;
}
.toggle-button {
	background-color: #4a5064;
	font-size: 10px;
	line-height: 24px;
	color: #ffffff;
	text-align: center;
	letter-spacing: 0.2em;
	cursor: pointer;
}
</style>
